Hello,
I want to avoid, that Level1 LB routes to HTTPD1 and HTTPD1 (on same server
as TC1) also balance to TC2 on level 2. So the next request from Level 1 go
to HTTD2 (on same server as TC2) and so I have double load on the same
server. Or is my understanding not right?
If a Tomcat (TC3) give up.. the Level 1 LB should recordnized that and
should redirect only to the functional Tomcats. The Failover functionality
should be provided only by the Level 1 LB.
-Ursprüngliche Nachricht-
Von: Jeffrey Janner [mailto:jeffrey.jan...@polydyne.com]
Gesendet: Dienstag, 15. November 2011 16:01
An: 'Tomcat Users List'
Betreff: RE: mod_jk Avoid loadbalancing
Alexander -
From reading your emails, it sounds like you have the following setup
F5 HW-balancer
|
/ \
/ \ Level 1 balancing
/ \
HTTPD1 HTTPD2
| |
Level 2 balancing
| | |
TC1 TC2TC3
Is that correct?
You state that you want to eliminate Level 2.
However, from a performance standpoint, why would you? Without the Level 2
balancing, it is conceivable that one of the 3 Tomcats could end up
processing the bulk the JSP requests.
However, Pid is correct. If you are worried about performance, you could
drop the HTTPD servers and balance directly to the Tomcat servers. Tomcat
is just as fast at delivering static content as HTTPD, and it simplifies
deployment.
Jeff
-Original Message-
From: Alexander Diedler [mailto:adied...@tecracer.de]
Sent: Tuesday, November 15, 2011 5:56 AM
To: Tomcat Users List; p...@pidster.com
Subject: AW: mod_jk Avoid loadbalancing
Hello,
Yes, it was an option to solve my problem. But what about the
performance?
My opinion was to forward only necessary requests to the Tomcat (jsp,
java
etc) and let the Apache HTTPD deliver the static content
(CSS,JS,Images etc).
Best regards
Alexander
-Ursprüngliche Nachricht-
Von: Pid [mailto:p...@pidster.com]
Gesendet: Dienstag, 15. November 2011 12:41
An: Tomcat Users List
Betreff: Re: mod_jk Avoid loadbalancing
On 14/11/2011 10:42, Alexander Diedler wrote:
Hello
It is possible in a three node TC 6.0 / TC7.0 Cluster to avoid the
loadbalancing between these three nodes? We only need the session
replication. The Loadbalancing with failover will be done by a
Big-IP F5, so we don´t need a double balanced request, first time
by the HW-balancer and second time by the Apache mod_jk himself.
So don't put httpd+mod_jk in front - just point the F5 at the Tomcats.
p
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